Quote:
Originally Posted by mikey_the_redneck
The architect and many others have said no it was not.
Jet fule is said to burn at 1400-1600F........the steel in WTC1,2 needs close to 3000F to fail.............watch the 7 minute video.
I guess an architect with 20 years steel structure experience does not know what he is talking about. If office fires can bring down towers than I am scared to go to any large city.
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Who knows, but you can't argue with physics.
Steel doesn't "fail" at 3000F, it MELTS. At 1100F it looses 50% of its strength, at 1800F 90%.
In order to compromise the strength of steel, you don't have to melt it completely. Look at any of the pictures, you can clearly see bent and twisted steel beams. You can also clearly see in pictures before the towers came down where the floors are being pulled inwards due to sagging of the floors, due to the heat causing the floor supports to sag.
This is all covered extensively in links already provided.